Improvement in horseshoes



.|. WANSTALL.

Horseshoe.. N0.|65,278 Patenredjulymm.

lfIITNI'IED` STATES yPATENT FFICE.

JOHN wANsrALL, OF WASHINGTON, DIsrRIcrOncOLUMBIA.

IMPROVEMENT'iN H'oRsEsHoEs.,

Specification forming part of Letters Patent N0. 165,278, cla-ted July 6, 1875; application filed June 17, 1875.

'To all whom it may concern Be it known that I, JOHN WANsrrALL, of Vashington city, in the county of Washington and District of Columbia, have invented certain new and useful Improvements in Horseshoes; and I do hereby declare that the following is a i'ull and'exact description thereof, reference being had to the accompanying drawings, making a part of this specication.

My invention relates to a novel improvement in horscshoes. It has for its object to provide the shoe with removable calks, which, when in place, shall be perfectly securcsuch securement being attained by little or no weakening of the shoe proper; and my invention consists in forming the shoe with rectangular slots at such points as may be desirable for l the location of the calks, for the reception of the Shanks of the same, and with transverse tapering grooves, through which the securingnail shall pass, all as will be hereinafter more fully set forth. y

'lo enable those skilled in the art to which my invention pertains to more fully understand the same, I will proceed to describe it, referring by letters to the accompanying drawings, in which- Figure l is a bottom view of a horseshoe embodying the features of my invention. Fig. 2 is a longitudinal section at the line or m of Fig. 1. Fig. 3 is a bottom view of a horseshoe of a smaller size than that shown at Fig. l, and without the thickened toe and heels; and Fig. 4i is a section at line y y of Fig. 3.

Similar letters indicate like parts in the several gures.

A represents an ordinary horseshoe, thickened up at the toe and heels, as seen at Figs. l and 2, or plain, as seen at Figs. 3 and 4. The shoe is provided with slots, rectangular in form, passing entirely through, and at such points as it may be desirable to locate the calks B are the calks, provided with a stem or shank, a, and any suitable groove or depression, b, (the latter to serve as a hold for nippers to pull the calk out.) The stem or shank a is provided with a transverse slot, c, through which the securing-nail D passes. The upper or foot side ofthe shoe is provided A with tapering grooves el, running across each slot which receives the calk-shrinks, and these grooves taper from the inside edge of the shoe out to the upper and outer edge, so that when the nail D is passed through the slots c in the shanks, the said nails will draw the calks home until the shoulders e shall lie itlush up against the under side of the shoe, and the top end ot' the shank a shall lie in the plane ot' the upper or foot side thereof. When this has been accomplished the projecting point of the nail is clinched or turned down, as clearly seen at Figs. 2 and 4. The calks may be readily removed by straightening out the point of the nail and withdrawing it by the head, and then grasping the calk with nippers in the grooves d and pulling. When the calks are removed the greatest wear of the shoe is at the toe and in the direction of the dotted lines seen at Figs. 2 and 4, so that it is essentially important that the outside edge of the shoes should be very strong; one of the great disadvantages of removable calks, as heretofore constructed and applied by securing-pins, being that the pin-grooves cut away so much of the stock of the shoe as to very materiallyT weaken the same. It will be observed that this disadvantage is entirely overcome, as the groove in which lies the securing pin or' nail runs ont practically to nothing, the taper of e the groove acting with the nail to also draw the calk home to its place. When the shoe is worn without the calks the edges of the slots may be so battered as to slightly decrease the size of the slot, so that the calk designed for said shoe would not enter `said slot, in which case I design using the calk made for the next smaller size, the shank ot' which is correspondingly shorter and thinner, so that it would readily enter the slot in the larger size shoe, and its decreased length would prevent its projecting above the plane ofthe upper surface ofthe shoe, which is essentially important to avoid pressing into the hoof ofthe horse. A slight projection, however, would work Vno ill results, as the hoof practically leaves the shoe from the outer edge, the nail of the hoof alone really resting upon the shoe. I also design vusing any suitable sheet-metal washers to and-6 ot' the drawing, the former representing a perspective view of the calk, and the latter a similar view of a suitable Washer'adapted to slip over the shank or stem of the calli.

In the manufacture of the shoes and calks I propose making various sizes, the calks adapted to t perfectly into their respective shoes; and, as before stated, when the shoes are worn previous to introducing calks, the oalks of the next smaller size shoe are used. I do not Wish to limit myself to the exact design of shoes or oalks shown, as they may be varied according to demand or for the uses they are intended for 5 but nail, substantially as and for the purposes described.

Witness my hand this lst day of June, A.

J OHN WANSTALL.

Witnesses J. EAKIN GADsBv, THOMAS RIGGLEs. 

